RE: "I think it needs significant benefits for typical users, not only for Instagram. If only Instagram get benefit from this, keep it as Instagram's internal patch."

But who's typical in this case? You? Me? We're talking code objects, something that the typical Python user doesn't even know exists if you take "typical" to mean "common" or "majority". I suspect if we asked Python developers if they knew what lnotab was an abbreviation of they wouldn't know, let alone how it worked.

And just because Instagram did this work and is making it public doesn't mean (a) others wouldn't use it or (b) others are already doing it privately. There are plenty of other companies with massive server installs of Python beyond Instagram.

My point is we have to be very careful when we start to claim we know what is typical or useful to the wider community considering how huge and diverse the Python community is.